/*
Copyright 2023 The Radius Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package middleware

import (
	"net/http"
)

// RemoveRemoteAddr is the middleware to remove remoteaddr to avoid high cardinality in metrics.
// This is a temporary workaround until opentelemetry-go fixes the issue - https://github.com/open-telemetry/opentelemetry-go-contrib/issues/3765
func RemoveRemoteAddr(next http.Handler) http.Handler {
	fn := func(w http.ResponseWriter, r *http.Request) {
		r.RemoteAddr = ""
		next.ServeHTTP(w, r)
	}
	return http.HandlerFunc(fn)
}
